Locomotive smoke-box.



B. F. STANNARD & Ai AGINSKEE;

LOGOMOTIVE SMOKE BOX.

urmqnxon I'ILED $EPT.12, 1910.

Patented Apr. 23, 1912.

2 SHEETS-SHEET l.

Al on 8511 W: I flftomwnt B. P. STA'NNARD & A. AGENSKEE. LOCOMOTIVESMOKE BOX.

APPLIOATION TILED SEPT. 12, 1910.

1,023,970, n PatentedApr.23, 1912.

2 SHEETS-SHEET 2.

347% zfimwa BENJAMIN F. STANNARD AND ABRAHAM AGINSKEE, OF OMAHA,NEBRASKA.

LOCOMOTIVE SMOKE-BOX.

Specification of Letters Patent.

Patented Apr. 23, 1912.

Application filed September 12, 1910. Serial No. 581,690.

, the boiler to the smoke stack.

As is generally well known, in order that the required force of steammay be generated for drawing a train, where coal is employed as a fuel,an adequate draft must be created to force the smoke through the smokestack from the flues of the boiler so that the fuel will be more freelyconsumed, the draft passing through the smoke box by intermittentdischarges of steam delivered through the nozzle of the smoke box, saidnozzle being in communication with the cylinders of the engine. Theforce of the intermittent discharges of steam is so great, however, thatburning cinders are thrown out of the smoke stack to a considerabledistance from the locomotive, often igniting and destroying valuableproperty along the line of the railway.

The invention includes the employment of devices and the format-ionofpassageways within'the smoke box, so arranged and operating, that whilethe movement of the smoke will not be impeded and the draft will not bereduced, the burning cinders will be extinguished before passing out ofthe smoke stack, the cinders and other burning particles, by reason ofthe construction of parts and devices employed, being separated andretained within the smoke box until they have been sufficiently cooled,and will not communicate fire.

Vith these objects in view the invention presents a novel construction,combination and arrangement of parts as described here in and claimed,and as illustrated in the drawing, it being understood that changes inform, size, proportion and minor details may be made within the scope ofthe claims without departing from the spirit or sacrificing anyadvantages of the invention.

In the accompanying drawing, Figure 1 is a transverse, sectional view ofthe smoke box, on line a a. of Fig. 2. Fig. 2 is a view in longitudinalsection of the smoke box, one of the walls of the separating chamberbeing partly broken away. Fig. 3 is a detail showing a preferred kind ofgrating which may be employed for the stationary and swinging screens orgrates. Fig. .L is a transverse, sectional View of the smoke box, online Z) 6 of Fig. 2; and Fig. 5 is a plan view of parts, being a sectionon the irregular line 0 o of Fig. 2.

Before describing in detail the novel features and operation of ourlocomotive smoke box, the principal parts commonly employed in theconstruction of these boxes will be pointed out.

Numeral 6 indicates the ordinary, cylindrical casing or wall of alocomotive smoke box, the front end and removable door thereof beingshown, respectively, at 7 and 8. The rear end of the smoke box isprovided with a flue sheet 9, the apertures thereof corresponding to theflues of the boiler of the locomotive (not shown). At 10, mounted uponthe cylindrical casing 6, is indicated the discharge exit-way or smokestack, the upright draft-flue ll of the smoke stack extending within thesmoke box and having a petticoat or expanded lower terminal 12. Andmounted in the lower part of the smoke box is the steam intake orupright, elongated nozzle 13, the same being disposed in alinement withflue 11, below the expanded terminal 12 of said flue.

The parts thus described are old and well known. The boiler and cylinderand their connections are not shown in the drawing, as the inventionrelates wholly to an improvement in smoke boxes. It will be understood,however, that steam is discharged from nozzle 13 intermittently withinthe smoke box by operation of the engine and its cylinders, thesedischarges of steam being for the purpose of forcing the smoke throughstack 10, the smoke entering the smoke box by passing the numerousapertures of fiuesheet 9.

In order that the burning particles of coal which enter the smoke boxmay be cooled before being expelled from the smoke stack, We provide ahorizontal fioor or partition 14: extending longitudinally of thecylindrical casing 6, thereby forming a lower compartment or coolingchamber d, the space above partition 14 being divided by the adjacent,longitudinal, vertically disposed partitions 15 to provide the two sidecompartments or flue-chambers 16 segmental in cross-section, and formingthe central compartment or separating-chamber 17. Horizontal partition14 is provided at its rear end with a deflecting-plate or inclinedportion 18, the same extending downwardly and rearwardly towardflue-sheet 9 to its junction with the lower part of casing 6. The rearend 19 of compartment 17 is convergent in form. This compartment is bestshown in Figs. 2 and 5; the vertical side walls m of said compartmentextend rearwardly to form the apex g], the horizontal partition 2forming the top of said compartment. At 20 is indicated a receivingchamber, and in operation, smoke and burning particles of coal are drawnwithin the smoke box through the apertures of the flue sheet, firstentering chamber 20. The inclination of the rear part of partition 14,or portion 18 thereof, facilitates the movement of the smoke whichenters the smoke box through the apertures in the lower part of theflue-sheet; and the convergent portion 19 of compartment 17 tends todivide the smoke or draft, substantially one-half thereof passing withineach of flue-chambers 16. Vertical walls 15 extend from horizontalpartition 14 to the upper part of casing 6, and they extend forwardlynear to the front end 7 of the smoke box as far as passageways 21. Thesepassageways occupy almost the entire front end of the smoke box abovehorizontal partition 14, as indicated in Fig. 2. While passageways 21are formed to occupy the space between the front end 7 of the smoke boxand the upright barrier plates 26, as shown in Fig. 5, they have aheight equal to the vertical walls 15; and their intakes are segmentalin form, as clearly shown in Fig. 1, being the space or area betweenwalls 15, the upper ends of barrier plates 26 and the cylindrical wallof the smoke box. Inclined angle irons 22 with screens or grates 23,segmental in form, mounted thereon are provided for each passageway 16,the inclination thereof, within these passageways, being forwardly anddownwardly thereof, and it will be understood that smoke and a part ofthe cinders will pass grates or screens 23 and will enter passageways 21from side passageways 16.

It has been stated that passageways 21 occupy almost the entire frontend of the smoke box above horizontal partition 14. By referring to Fig.5 it will be seen that compartment 17 opens upon this space, andtherefore said compartment is in communication with passageways 21; andby reason of recesses or passageways 21, compartment 17 is incommunication with side passageways 16, since the upright barrier plates26, as clearly shown in Fig. 1, have a limited height and do not preventthis communication. Compartment 17 is provided with a screen or grate24, the same being mounted upon angle irons 25, these parts extendingrearwardly and inclined downwardly toward the rear of said compartment.

Barrier plates or partitions 26 above referred to are best shown inFig. 1. (In Fig. 5 they are shown in section.) They are substantiallyalike in form. They are disposed transversely of the smoke box uponhorizontal partition 14, adjacent to the front end 7 of said box. Theyhave a length substantially equal to the width of side passageways 16,and extend upward from partition 14 to form a connection with the lowerend of grates or screens 23, as clearly shown in Fig. 1.

An upright partition or barrier plate 27 isprovided for compartment 17.It has a length equal to the width of said compartment and has a heightsufficient to form a connection with the lower end of grate or screen24.

A transverse upright partition 43 (Fig. 2) connects the front end ofgrate 24 with the upper part of easing 6, and as shown in Fig. 5 anexit-way 28 is provided for each of side chambers 16, and an exit-way 29is provided for the central chamber 17, these ways being aperturesformed in horizontal partition 14, and-in operation, smoke will readilypass through grates 23 and 24 from chamber 20, the force of steam whichpasses inwardly of nozzle 13 causing it to pass through stack 10; andcinders or particles of coal which are too large to pass through thesegrates or either of them will pass through exit-ways 28 and 29, theirmovements being aided by the upright barrierplates or partitions 26 and27. The openings formed in grates 23 are larger than those formed ingrate 24, and, in operation, the larger particles will be detained bygrates 23. The particles of coal and cinders move with great forceagainst the screens or grates, and in practice become caught or wedgedwithin the interstices thereof, and in order that they may becomedislodged, the screens are disposed inclinedly and the swinging grates,indicated at 30, are provided. Swinging grates 30 are pivotally mountedupon the upper parts of angle-irons 22 and are disposed dependably belowthe upper ends of grates 23, and, preferably, they are weighted at theirlower ends. The stop-and-start movements of the locomotive andvibrations incident thereto will cause occasional strokes to bedelivered by these swinging members upon the lower sides of grates 23,with the result that particles of coal or cinders may be dislodged fromsaid grates, by the contact or concussion of these parts. A similarwveighted swinging-grate 31 is pivotally mounted at its upper endbetween walls 15 of compartment 17 below inclined grate 24, and thesmaller cinders or coal dust which may have passed through grates 23 andwhich may accumulate upon grate 24 may, by concussion, be dislodgedtherefrom, when this weighted grate swings and strikes said stationaryscreen or grate.

It will be seen that, while the smoke may readily pass through grates 23and 24, and by suction will pass within flue 11, and will move out ofthe smoke stack, particles of coal or. burning cinders will be detained.They will pass downwardly through apertures 28 and 29 into thecooling-chamber (Z.

Chamber (1 is provided with a plurality of baflie plates, best shown inFig. 1. While they are disposed substantially horizontally, transverselyof the smoke box, it will be seen that they are somewhat inclined. Theyare arranged in pairs, the upper pair 32 and each alternate, lower pair32 being joined at their inner edges and inclined downwardly andoutwardly and extending opposite to each other near to the side walls ofeasing 6 to provide passageways 33, the pairs of baflie plates 34 whichare located between the baffle plates mentioned, having their outer endsmounted upon casing 6 and inclined inwardly, each providing alongitudinal passageway 35 between their inner terminals. In operation,a limited amount of time is required for the cinders to pass from onebaffle plate to another. They become cooled during their movements, andare finally discharged through the smoke stack by passing through fluepipe 36, located at the bottom of chamber d.

'It will be seen that the herein described smoke box provides means forthe separation of. the cinders from the smoke, the cinders before beingdischarged from the smoke stack being moved upon horizontal,

\ partition 14 and passed downward through openings 28 and 29 thereof,and after being moved transversely of the smoke box upon inclined plates32, 32 and 34, enter chamber 17 rearwardly of screen 24 by passingthrough the upright portion 36 of pipe 36. They are elevated from pipe36 by suction, caused by the discharges of steam through nozzle 13, andin practice this force prevents accumulation of cinders within chamber(l. Vhile the strokes of the swinging grates or frame members 30 and 31upon the lower sides of the respective inclined grates 23 and 24 causedislodgment of cinders which may be wedged therein, it is necessary toclean the screens occasionally and to remove the coal dust which mayadhere thereto, access to the smoke box being through door 8, and itwill be seen that, since the screens or grates are mounted upon angleirons 22 and 25, by use of screw-bolts 37, the grates may beconveniently removed whenever required.

At 38, disposed below the lower part of casing 6, is indicated anair-pipe, having a "alve 39; and air from an exterior source may passthrough said pipe, within the rear end of pipe 36, at the junctionof'said pipe and-its upright portion 36'. When valve 39 is opened, airwill be drawn within the smoke box with considerable force to move thecinders from chamber (Z.

At 40 (Fig. 3) is indicated a grate or screen which could be employed toadvantage in the construction of members 23, 24, 30 and 31. It consistsof a metallic sheet- 41, having numerous apertures 42 formed therein.

It may be briefly stated that smoke which passes through theperforations of flue sheet 9 will enter receiving chamber 20; it willthen pass forwardly of the smoke box through the twoside passageways 16,and will enter passageways 21 by passing through screens 23. Frompassageways 21 the smoke will move rearwardly within compartment 17through screen'24, and will enter draft flue 11, and from thence willpass out of the smoke stack.

Having fully described the several parts and their uses, a furtherexplanation relating to operation is not necessary.

WVhat we claim and desire to secure by Letters Patent is,

1. In combination with a horizontally disposed, cylindrical receptaclehaving a terminal flue-sheet providing a smoke-intake, a steam intakepipe and a discharge passageway; a horizontal partition in thereceptacle to provide a lower compartment; adjacent, upright partitionsdisposed above and connecting the horizontal partition and the wall ofthe cylindrical receptacle and forming longitudinal side chambersopening upon the smoke intake with exit ports communicating with thelower compartment, and forming a separating chamber between .the sidechambers, said separating chamber communicating with the side chambers,the steam intake and the discharge passageway, and having an exit portand an intake port communicating with said lower compartment; and ascreen mounted within the separating chamber and each side chamber, thearrangement being that the exit port of each side chamber is disposedbetween the screen therein and the smoke intake.

2. A smoke box for locomotives, comprising, in combination with ahorizontally disposed, cylindrical receptacle having at its rearterminal a transverse, apertured flue sheet and provided with adischarge port and a steam intake, and having upper, side fiue-chamberseach provided with a screen 23 and opening upon the apertured fluesheet;a separating compartment provided with a screen 24 and disposed betweenand opening upon the side flue-chambers, said separating compartmentbeing in communication with the steam intake and the discharge port ofthe cylindrical receptacle; a lower compartment having intake portscommunicating with the side flue-chambers rearwardly of screens 28, andhaving an intake port communicating with the separating compartmentforwardly of screen 24, and provided with an exit port communieatingwith the separating compartment rearwardly of said screen 24K; and aplurality of baflie-plates within and disposed between the intake portsand exit port of said lower compartment.

3. In combination with a horizontally disposed, cylindrical receptaclehaving a terminal flue-sheet providing a smoke-intake, a steam intakepipe and a discharge passageway; a horizontal partition in thereceptacle traversed by the intake pipe and forming a lower compartment;adjacent, upright partitions disposed above and connecting thehorizontal partition and the wall of the cylindrical receptacle andforming longitudinal side chambers opening upon the smoke intake withexit ports communicating with the lower compartment, and forming aseparating chamber between the side chambers, said separating chambercommunicating with the side chambers, the steam intake, the dischargepassageway, and having an exit port and an intake port communicatingwith said lower compartment; stationary screens disposed inclinedlywithin the separating chamber and side chambers; weighted screenspivotally mounted adjacent to said stationary inclined screens, the exitports of each side chamber being disposed between the screens thereinand said smoke intake.

4. A smoke box for locomotives, comprising, in combination with ahorizontally disposed, cylindrical receptacle having at its rearterminal a transverse, apertured fluesheet and provided with a dischargeport and a steam intake, and having upper, side flue-chambers openingupon the apertured fiue-sheet each being provided with the sta tionary,inclined screen 23; a separating compartment disposed between andopening upon the side fiue-chambers and provided with the stationary,inclined screen'24, said separating compartment being in communicationwith the steam intake and the discharge port of the cylindricalreceptacle; a weighted frame-member pivotally mounted adjacent to eachof the stationary, inclined.

screens of said side flue-chambers and separating compartment; a lowercompartment having ports communicating with the side flue-chambersrearwardly of said screens 23 and having an intake port communicatingwith the separating compartment forwardly of screen 2%, and providedwith an exit port communicating with the separating compartmentrearwardly of said screen 24; and

a plurality of battle-plates within and disposed between the intakeports and exit port of said lower compartment.

5. A locomotive smoke box, comprising, in combination with a horizontal,cylindrical container having an exit way, a steam intake pipe, andprovided at its rear end with an upright, apertured flue-sheet, ahorizontal partition in the container to provide a lower compartment;adjacent upright partitions connecting the horizontal partition and theupper part of the container to provide longitudinal side-chambers and anintermediate separating chamber, each of the longitudinal side-chambersopening upon the apertured flue-sheet and provided at its front terminalwith a transverse, upright barrier-plate and having an exit way formedbetween said barrier-plate and said flue-sheet to communicate with saidlower compartment, said separating chamber communicating with the exitway and intake pipe of the cylindrical container and with said sidechambers and provided at its rear terminal with an upright, transversebarrierplate and an exit way forwardly of said barrier-plate incommunication with said lower compartment; a grate mounted upon thebarrier-plates of the side chambers and said separating chamber; saidlower compartment having an exit way communicating with the separatingchamber rearwardly of the transverse barrier-plate thereof.

6. A device for the purpose described, comprising a horizontallydisposed, cylindrical receptacle having upon its rear end a flue-sheetand provided with a discharge port and a steam intake, a horizontalpartition forming a lower compartment, said partition being formed withan intake port and a discharge port and having a part of its walldisposed inclinedly to form a deflecting plate; side passageways abovethe horizontal partition each communicating with the flue-sheet andhaving an exit way communicating with the lower compartment; aseparating compartment disposed between and communicating with the sidepassageways and with the steam intake and discharge port of thereceptacle; a barrier plate disposed transversely of and within theseparating compartment and projecting above the horizontal partitionbetween said intake port and discharge port; and a' rectangular screendisposed inclinedly within the separating compartment and having itslower end mounted upon the barrier plate.

7. A locomotive smoke box, comprising, in combination with a horizontal,cylindrical container having an exit way, a steam intake, and providedat its rear end with an upright, apertured flue-sheet, a horizontalpartition in the container traversed by the steam intake and forming alower eompartment; side chambers and an intermediate separating chamberformed above said horizontal partition, each of the side chambersopening upon the apertured flue sheet and provided at its front'terminalwith a transverse, upright barrier-plate and having an exit way formedbetween said barrier-plate and said flue sheet communicating with saidlower compartment, said separating chamber communicating with the exitway and steam intake of the cylindrical-container and with said sidechambers and provided at its rear terminal with an upright, transversebarrier-plate and with an exit way forwardly of said barrier plate incommunication with the lower compartment; a grate mounted upon thebarrier-plates of the side chambers and said separating chamber; saidlower compartment having an exit way communicating with the separatingchamber rearwardly of the transverse barrier-plate thereof; and aplurality of bafitle plates disposed inclinedly and mounted within saidlower compartment.

8. A device for the purpose described, comprising a horizontallydisposed, cylindrical receptacle having upon its rear end an aperturedflue-sheet and provided with a discharge port and a steam intake, ahorizontal partition forming a lower compartment and having a part ofits wall disposed inclinedly to form a deflecting-plate; sidepassageways above the horizontal partition each communicating with theapertured fiuesheet and having an exit way communicating with the lowercompartment; a separating compartment disposed between and communicatingwith the side passageways and with the steam intake and discharge portof the container, and having an exit port and an intake portcommunicating with the.

lower compartment; a screen disposed inclinedly and connected with thehorizontal. partition within the separating compartment between the exitand intake ports thereof; and a plurality of bafiie plates mountedwithin said lower compartment.

9. A locomotive smoke box, comprising, in combination with theflue-sheet, the exit passageway and steam intake thereof, a horizontalpartition forming a lower compartment; segmentally-formed chambers inthe upper part of the box communicating.

with the flue-sheet and provided with ports communicating with the lowercompartment; a separating chamber in communication with the steam intakeand exit passageway of the smoke box and disposed between andcommunicating with the lower compartment; grates disposed inthesegmental sidechambers and the separating chamber; and a plurality ofbafiie plates mounted within the lower compartment.

10. A-locomotive smoke box, comprising, in combination with theflue-sheet, the exit passageway and steam intake thereof, a horizontalpartition forming a lower compartment; side-chambers in the upper partof the box in communication with the flue sheet and having exit portscommunicating with the lower compartment; a separating chamber incommunication with the steam intake, and exit passageway of the smokebox and disposed between and communicating with the side chambers, andhaving an exit port and an intake port communicating with the lowercompartment; rigidly mounted, inclined grates within the side chambersand separating chamber; pivotally mounted weighted frame-membersdisposed adjacent to said grates; and a plurality of baflle platesdisposed inclinedly within the lower compartment.

In testimony whereof we have affixed our signatures in presence of twowitnesses.

BENJAMIN F. STANNARD. ABRAHAM AGINSKEE. Witnesses:

HIRAM A. STUReEs, A. H. BENTON.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents. Washington, D. C.

